Table 2. Comparison of Phoenix and Vitek MS in identifying 864 isolates.
| No. of isolates | No. of isolates identified to species level by |
No. of isolates identified to: genus level by |
||||||
|---|---|---|---|---|---|---|---|---|
| Automated microbiology system | MS | P | Automated microbiology system | MS | P | |||
| Enterobacteriaceae spp. | 270 | 258 | 243 | 0.019 | 264 | 265 | 1.000 | |
| Nonfermentative Bacilli | 134 | 127 | 129 | 0.769 | 130 | 132 | 0.684 | |
| Staphylococcus spp. | 298 | 244 | 293 | 0.000 | 295 | 296 | 1.000 | |
| Staphylococcus aureus | 81 | 79 | 81 | 0.497 | 81 | 81 | – | |
| Coagulase negative staphylococcus (CoNS) | 217 | 165 | 212 | 0.000 | 214 | 213 | 1.000 | |
| Enterococcus spp. | 92 | 66 | 92 | 0.000 | 91 | 92 | 1.000 | |
| Streptococcus spp. | 70 | 48 | 62 | 0.007 | 68 | 69 | 1.000 | |
| Total | 864 | 743 | 819 | 0.000 | 848 | 854 | 0.236 | |